The bank plans to slash costs following the Swiss central bank's decision to allow the currency to float freely, in part by lowering bonuses this year and moving support jobs out of high-cost Switzerland.

'Based on 2014 earnings, we estimate the net adverse impact on our profit to be approximately 3 percent and expect to more than offset this impact through the announced measures by end-2017,' Credit Suisse Chief Executive Brady Dougan said in a statement.